diff options
Diffstat (limited to 'target/linux/ifxmips/files/arch/mips')
| -rw-r--r-- | target/linux/ifxmips/files/arch/mips/ifxmips/prom.c | 71 |
1 files changed, 63 insertions, 8 deletions
diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c b/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c index 2fb33b7cb..41e111c69 100644 --- a/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c +++ b/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c @@ -29,25 +29,28 @@ #include <asm/bootinfo.h> #include <asm/ifxmips/ifxmips.h> + static char buf[1024]; +u32 *prom_cp1_base = NULL; +u32 prom_cp1_size = 0; void -prom_free_prom_memory (void) +prom_free_prom_memory(void) { } void -prom_putchar (char c) +prom_putchar(char c) { - while ((ifxmips_r32(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF); + while((ifxmips_r32(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF); - if (c == '\n') + if(c == '\n') ifxmips_w32('\r', IFXMIPS_ASC1_TBUF); ifxmips_w32(c, IFXMIPS_ASC1_TBUF); } void -prom_printf (const char * fmt, ...) +prom_printf(const char * fmt, ...) { va_list args; int l; @@ -58,17 +61,69 @@ prom_printf (const char * fmt, ...) va_end(args); buf_end = buf + l; - for (p = buf; p < buf_end; p++) + for(p = buf; p < buf_end; p++) { prom_putchar(*p); } } +u32 *prom_get_cp1_base(void) +{ + return prom_cp1_base; +} + +u32 prom_get_cp1_size(void) +{ + return prom_cp1_size; +} + void __init prom_init(void) { + int argc = fw_arg0; + char **argv = (char **) fw_arg1; + char **envp = (char **) fw_arg2; + + int memsize = 16; + int i; + mips_machtype = MACH_INFINEON_IFXMIPS; - strcpy(&(arcs_cmdline[0]), "console=ttyS0,115200 rootfstype=squashfs,jffs2 init=/etc/preinit"); - add_memory_region (0x00000000, 0x2000000, BOOT_MEM_RAM); + argv = (char**)KSEG1ADDR((unsigned long)argv); + arcs_cmdline[0] = '\0'; + for(i = 1; i < argc; i++) + { + char *a = (char*)KSEG1ADDR(argv[i]); + if(!a) + continue; + if(strlen(arcs_cmdline) + strlen(a + 1) >= sizeof(arcs_cmdline)) + break; + strcat(arcs_cmdline, a); + strcat(arcs_cmdline, " "); + } + + envp = (char**)KSEG1ADDR((unsigned long)envp); + while(*envp) + { + char *e = (char*)KSEG1ADDR(*envp); + + if(!strncmp(e, "memsize=", 8)) + { + e += 8; + memsize = simple_strtoul(e, NULL, 10); + } + envp++; + } + + prom_cp1_size = 2; + memsize -= prom_cp1_size; + prom_cp1_base = (u32*)(0xA0000000 + (memsize * 1024 * 1024)); + + prom_printf(KERN_INFO "Using %dMB Ram and reserving %dMB for cp1\n", memsize, prom_cp1_size); + memsize *= 1024 * 1024; + + if(!*arcs_cmdline) + strcpy(&(arcs_cmdline[0]), "console=ttyS0,115200 rootfstype=squashfs,jffs2 init=/etc/preinit"); + + add_memory_region(0x00000000, memsize, BOOT_MEM_RAM); } |